Rotary reproducing copying or printing machine.



E. GLAS & B. SOKAL,

ROTARY REPRODUGING COPYING II PRINTING MACHINE.

APPLICATION FILED MAR.8,1913.

1 1 2%,7Q5. Patented Jan. 12, 1915.

THE NORRIS PETERS 50.. PHOTO-LITHQ. WASHINGTON, n, c w.

rArnN'r O EMIL GL-AS AND BERNHARD SOKAL, OF VIENNA, AUSTRIA-HUNGARY, ASSIGNORS TO FIRM RAPAX-APPARATENBLAU-GESELLSGI-IAFT M. 18. IL, OF VIENNA, AUSTRIA- HUNGARY.

ROTARY REPRODUCING COPYING OR PRINTING MACHINE.

Specification of Letters Patent.

Patented Jan. 12, 1915.

To all whom it may concern:

Be it known that we, EMIL GLAS and BERNHARD SoKAL, subjects of the Emperor of Austria-Hungary, residing at Vienna, in the Empire of Austria-Hungary, have invented certain new and useful Improvements in and Relating to Rotary Reproducing Copying or Printing Machines, of which the following is a specification, reference being had therein to the accompanying drawing.

The present invention has for its object a device which serves to supply printing ink to the inner side of the rotary drums of reproducing machines and which is characterized by the fact that the ink is supplied by means of an inking roller which, owing to the rotary movements imparted to the drum is alternately applied to a rotating ink roller and to the inner side of the rotating drum.

In order to adapt the angular magnitude of the portion of the inner periphery of the printing roller traversed by the inking roller to the length of the printing roller segment occupied by the text to be reproduced, adjustable control members are provided, by the adjustment of which the application and the removal of the inking roller takes place along those generating lines of the printing roller that limit the portions utilized for the time being: by this means the useless inking of the surfaces of the printing roller that are not for the time being in use is avoided.

Additional improvements relate: to the mounting of the inking roller, by means of which the intimacy of its contact with the ink roller can be modified: to a device for automatically setting the inking roller parallel, on the one hand with the ink roller printing the inking of the inking roller can be stopped so that notwithstanding the further actuation of the apparatus it takes no fresh ink from the ink roller.

Figures 1 and 2 of the accompanying drawing illustrate a device embodying the invention in cross section and in longitudinal'elevation partly in section, Fig. 3 is a view similar to Fig. 1 in which, however,

the inking roller is not in contact with the mk roller as in Fig. 1 but with the inner face of the printing roller. Fig. 4: shows the apparatus in side elevation viewed from the right in Fig. 2. Fig. 5 illustrates diagrammatically the arrangement of the cams producing the oscillating movement of the inklng roller; the sector faces of the cams which form part of the same cylindrical surface, have been shown in this figure for the sake of clearness as conforming to a different cylindrical surface. Fig. 6 shows the mounting of the inking roller. Fig. 7 is a cross section on the line A A of Fig. 4: to a larger scale. Fig. 8 is a section on the line B B of Fig. 7

The apparatus is mounted in the usual manner between two uprights r1- united by distance bolts w and the fixed shaft 7 (Figs. 1 to 4), the hubs 'v, o of the two plates 1) p are loosely mounted upon the fixed shaft f; these plates are connectedone with the other by means of a cylindrical surface on embracing approximately one half their circumference and forming the printing roller; in the known manner this surface is adapted for the reception of the printing ink and on its outer face for delivering the ink.

Upon the hub located on the left hand in Fig. 2 the handle 2 is mounted; this handle serves in the known manner for rotating the printing roller m p while upon the hub 4) located on the right of Fig. 2 a gear wheel 13 is mounted by means of which the shaft 19 of the ink roller t which is mounted on the ink trough h is actuated. This shaft 19, is driven by the intermediary of the gear wheels 13, 17 and before the roller on said shaft comes into contact with the inking roller a it is freed from the ink in excess by means of a scraping or wiping roller 0. The inner end face of this hub '12 is reinforced by a projecting cam plate 1 comprising approximately 180'; two cams 2, 3 pivotally mounted on the hub 11 are caused to register more or less with this cam plate 1 and they are adapted to be held in any desired position by a clamping screw 4 passing through the hub '0 (Fig. 5,). This screw engages the movable cams 2, 3 through slots 5, 6.

The fixed cam 1 and the two cams 2, 3 ad justable and fixable thereon constitute a oooperating cam face. which can be enlarged from 180 up to approximately 300, ac-

cording to the position of the movable cams I 2, 3. The displacement ofthe cams 2, 3 is produced bymeans ofthe pins16 provided upon the latter" and engaging the hub o through arc-shaped slots 15, 16 and showing upon circular scales 18' the total angular magnitude of the cam surface composed of the parts 1, 2, 3.

The inking roller (Fig.v 6) which rolls alternately upon the ink' roller t and on the inner periphery of the printing roller m, p is mounted 1ina U- shaped frame n which by means ofa single pin7 located at the middle point of its side, is connected with; the side 1 contacts with the inner face of the printing 'e r m, 1

The, oscillation ofthe frame system b, n

and of; the inking rol lera (Figf 1)[which is opposed by the pull of the spring ltand I owing to which a it comes j into contact with theink roller 1 t is produced {by means of a two-armed lever ,(Figs, 1, 2,, 3) which is also mounted between the brackets c, the contact roller 11 of thisleyer contacting with; the cam group 1, 2, 3 already described and its downwardly extending arm being connectedby a tension. rod 10 withfthe downwardly" extending arm- '9 of the oscillating frame 6, i i

In orderto insurethatthe contact of the inkingroller ac with the ink roller i shall be more or; less intimate according to the quant t f e nke nd hei m r f p e sion v. to, e. made, h a emen adopted, is such that the ends of thebrack- -ets 0, carrying the frame systemd amounted n h xed haft) ormY d 'ew p nd 12: and bymeans of thenutscan be vertie cally adjusted wherehy thea'vertical' position of the bearing trnnnions 8 ofthe roller -a' experiences a corresponding adjustment 1 (Figs. 1, 2,3).

Bymeans of the arrangement already describedthat the frame .n carrying the inking roller a ,(see Fig. 6) isabletooscillate 7 around ,the vertical bolt 7 mounted j in the frame b the result is attained that, the inkt o r a s. ble a' e r. QthnPQn, the prin ing rql r a d; l qnpon, the 11 -..i" 11.1er a-long, its nti eilenl .hi-w ere. e tire takingand delivery 0 are a oide d."-

In order to stop the inking by the ink roller entirely toward the end of the printing the gear wheel 17 (Figs. 7, 8 is n ot fast upon the ink roller spindle 19; but is merely connected therewithby means of a dog adapted to be rendered inoperative; this dog of known construction consists of an arm 21 keyed upon the spindle 19 in which a headed driver pin 22 pressedby ,a spring against the gear wheel 17 is guided; in the pressed in position this pin engages in one of the slottedsectorsZQ of the gear wheel 1'? and after'traversing thesector, in question drives the gear wheel17, thislpin being I adapted to be lifted 011t,o fthis :see} tor20 in opposition tothe'actienf of the spring and retained in the lifted; position byfrotatingnit, in such, amanner tha the nipple 301 ofthedriver pin "v22i,"lifte ro'r'n the longitudinal slot of the; sleeve/231s placed upon thesolid end face? of the sleeve 23; In this'position of the driver pin 2 2ithe ink roller 6 will remain, at rest receive no fresh ink even when the printing r'oller m, p is rotating, 1

Before starting to print, inthe fir st place the' position, of the adjustable cams'f r2, '3

relatively to the fixed cam '1isin1o di fiedin accordance with the number of, lines of text to be, printed in such, a manner that in the I casefof ltext comprisinggapf rozgin a'tely only one third of the page, the fmo able cams l 2, 3 are 7 oscillated to the; mannnu'm distance from the rigid cam 1, While the e O a l ger n m er of nesbfwtext the cams 2, 3' are oscillated so far overthejhiied cam 1' that the inking toner a remains incentact with/the printingroller for the portion of its periphery corresponding to thejniimber of lines. 'The adjustment of themovable Cains 2,?3 necessary forjalgivenfnuinber of lines can be read on the scales 18, 18-yarranged on the outer endfaceflofthe hubiv of the roller, the tongues arranged 70 the adjustingpins 16 of the c'amsQ, 3 sliding over these scales.

Normally the apparatus, is actuated by means oflthe handleathe ink roller tfbeing continuously rotated and the inking lwller a being,v alternately applied to, the inkfjroller t and the inner face of the v pri'ntingQroller m, p. Toward the end of the reprcduetion theinkr'oll'er t isfbrought to "restfby raising 'withthefingers, the headed driver pin 22,

wherebythesupply of fr sh ink to thednkin ronem isist 'opped. Having now' particularly described and ascertained the nature of our said invention and in what manner the same is to ,be jperformed, We declare that what iwe cl is" 'In a rotary reproducing app having, a 'plate,' a" printing 'rolle hiib'having thereoill" of te prodi cfedf i kf l g f operate herewith," a fixed cam are-a1 t. e i d;

face of said plate, adjustable cams, adjust- In testimony whereof we afiix our signain?1 pins ppsitioneil on said (iaijulstaiale cam; tures in the presence of two Witnesses.

an engagln in s ots in sai u p ate an scales on sal d hub to indicate the adjust- SOKAL 5 ment of said cams to Vary the time of cooperation of said printing roller and said Witnesses: inkin roller, in accordance with the num- FRIEDRICH BINDER, bar 0 lines in the text. AUGUST FUGGER.

copies a! thin patent may be obtained for five cents each, by addressing the commissioner of latent,

Washington, D. 0. 

